Home / 80,502.76-111,055.21-56,642.59

Finding the Fourth Proportional to 80,502.76, 111,055.21 and 56,642.59

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Solution

The fourth proportional to 80,502.76, 111,055.21 and 56,642.59 is: 78,139.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,502.76 : 111,055.21 = 56,642.59 : x
  2. Step 2: Convert to fraction form
    80,502.76/111,055.21 = 56,642.59/x
  3. Step 3: Cross multiply
    80,502.76x = 111,055.21 × 56,642.59
  4. Step 4: Simplify right side
    80,502.76x = 6,290,454,727.39
  5. Step 5: Solve for x
    x = 6,290,454,727.39/80,502.76
  6. Step 6: Final answer
    x = 78,139.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.